28259248 has 30 divisors (see below), whose sum is σ = 55650084. Its totient is φ = 13901472.

The previous prime is 28259243. The next prime is 28259269. The reversal of 28259248 is 84295282.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28259248.

It is not an unprimeable number, because it can be changed into a prime (28259243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99715 + ... + 99997.

Almost surely, 2^28259248 is an apocalyptic number.

It is an amenable number.

28259248 is a deficient number, since it is larger than the sum of its proper divisors (27390836).

28259248 is an equidigital number, since it uses as much as digits as its factorization.

28259248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 364 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 28259248 is about 5315.9428138384. The cubic root of 28259248 is about 304.5931976913.

The spelling of 28259248 in words is "twenty-eight million, two hundred fifty-nine thousand, two hundred forty-eight".